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Which one of the following is a base physical quantity?
The SI base unit of electric current is:
Which of the following is a non-physical quantity?
Which SI prefix represents one thousandth part of a unit?
Which of the following can be measured using an instrument?
Why is scientific notation useful in physics?
Which instrument is most suitable for measuring the thickness of a thin wire?
The least count of a metre rule is usually:
Which error is caused by reading a scale from an incorrect eye position?
Which statement best defines a physical quantity?